20129080

素因数分解:

$2^3\times 5^1\times {\mathrm{503227}}^1$

素因数の和:503238

約数の個数: 16

約数和(自身を含む): 45290520

約数和(自身を除く): 25161440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503227, 1006454, 2012908, 2516135, 4025816, 5032270, 10064540, 20129080]

約数ペア:

[(1, 20129080), (2, 10064540), (4, 5032270), (5, 4025816), (8, 2516135), (10, 2012908), (20, 1006454), (40, 503227)]